PCM5102A circuit components

I've gotten my hands on a pair of PCM5102A chips and want to create a DAC for my rpi. So my project is sort of Hifiberry DAC DIY.

I've looked through TI's reference diagrams (http://tinyurl.com/owh3rjz, PCM51xx, p. 26). The components here are pretty straight forward (maybe except the 10nf). What did you learn through your dev. phase? Any alterations from the reference?

Further, what component did you use for the 5V->3.3V transformation?. This component seems to have changed trough the revs.

1 comment

Use a high-quality voltage regulation on the analog side, it will have an impact on THD+N. We're using an ultra-low-noise regulator from Analog devices. Use resistors in all data lines to shape the data signals. As always, use at least 2 different capacitors on the voltage rails - higher capacity caps and lower-capacity caps with an extremely low ESR.The most critical thing is the PCB design. Even best components will perform bad if the PCB design is not good. A list of resources can be found here: http://www.crazy-audio.com/2013/07/create-better-pcbs/.